Answer:
In his book (ten books, actually) Republic, Plato manages to argue away most of the modes. He wanted strong and courageous leaders, and any music that promoted weakness, or intemperance, was not a mode for him. Dirge-like modes, like the Lydian mode, are out, as is the Ionian, for it promotes sloth and drunkenness, he feels.
Step-by-step explanation: